Methyl (1S,2S,3R,4R)-3-((S)-1-acetamido-2-ethylbutyl)-4-((tert-butoxycarbonyl)amino)-2-hydroxycyclopentane-1-carboxylate

Methyl (1S,2S,3R,4R)-3-((S)-1-acetamido-2-ethylbutyl)-4-((tert-butoxycarbonyl)amino)-2-hydroxycyclopentane-1-carboxylate,